在C#中实现标签（Label）随鼠标移动而移动

文档及代码下载：http://www.dingos.cn/index.php?topic=1420.0

1. 定义一个Point对象mouse_offset，用于保存鼠标的位置
2. 对标签（Label）添加MouseDown事件，记录当前鼠标所在的位置为实例化mouse_offset对象

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private void lblMove_MouseDown(object sender, MouseEventArgs e) {

mouse_offset = new Point(-e.X, -e.Y);

}

3. 对标签（Label）添加MouseMove事件，实现标签（Label）随鼠标的移动而移动

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private void lblMove_MouseMove(object sender, MouseEventArgs e) {

if(e.Button == MouseButtons.Left) {

Point mousePos = Control.MousePosition;

mousePos.Offset(mouse_offset.X, mouse_offset.Y);

((Control)sender).Location =

((Control)sender).Parent.PointToClient(mousePos);

}

}